In December 2003, an extensive archive of materials relating to Castro’s interview with Lee Lockwood published in Playboy in January 1967 was sold by Christie’s in New York for $8,963.

The lot included typescripts for the introduction to the interview, typed manuscripts of the interview, a typed letter to Hugh Hefner and three black and white photos of Castro by Sven Simon, amongst other items.

4) Signed photo - £4,000

A signed photograph of Castro with fellow revolutionary, Camilo Cienfuegos entering Havana on January 8 1959 was sold by Dominic Winter Book Auctions in 2010 for £4000.

Castro’s is one of the top 40 most sought after autographs according to the PFC40 Autograph Index and his signed photos have increased in value by 807.7% in the last 10 years.

5) Account of the final days of the Cuban Revolution - $2,390

A photograph album titled "Academia De Ciencias De Cuba - Fotografias" which featured a typed manuscript with tipped in photographs, including an inscribed photograph of Castro was sold by Heritage Auction Galleries in October 2006 for $2,390.

The document was put together by Celia Sanchez Manduley, secretary, friend and rumoured lover to Castro.